PHP-GTK 2 is an extension to PHP and can be used only with versions 5.1 upwards. Although the most common way of installing PHP-GTK 2 is compiling, this process can prove to be quite tedious on Windows systems; in which case most people will be using the official PHP-GTK 2 Alpha binary release or the Gnope installer.

We'll be covering the installation process for the three most popular operating systems: Windows, Linux and Mac OS X. The instructions for Linux are applicable to most distributions in addition to other POSIX compliant systems.